Interior seat swap

[Matt_dab]

Hi everyone, this is my first post so if It ends up being horrific! Forgive me!

I have a 2010 B6 highline plus estate, it has full leather but the awful standard seats!

I want to swap to b6 sport/sel seats, I always assumed the rear bench must come from the same model so saloon-saloon and estate-estate, however I've noticed all estates have split rear backrest which is fine, some have a split rear bench base seat, others have a 1 piece base.. are they interchangeable? Anyone done a swap and were there any modifications required?

I have split rear base at the minute if that makes any difference!